NAEP Economics: Markets, National Economy, and Trade
NAEP Economics is assessed at grade 12 and covers the market economy, the national economy, and the international economy. Students need economic reasoning: scarcity forces choices, choices have opportunity costs, incentives shape behavior, and markets coordinate through prices. Items ask students to apply concepts to scenarios, interpret data, and evaluate policies.
Core rules
- Opportunity cost is the value of the next-best alternative forgone, not the money paid.
- Sunk costs are unrecoverable and should not drive future decisions.
- Demand and supply shifts change equilibrium price and quantity; movements along a curve are responses to price.
- Comparative advantage explains gains from trade even when one producer is more efficient at everything.
Worked example
A student can work four hours for 15 dollars per hour or attend a free review session. If the student chooses the session, what is the opportunity cost? Reasoning: The forgone wage is 4 times 15, or 60 dollars. The session's free price does not make its cost zero. If the student would otherwise study, the opportunity cost would be the value of that study time, not the 60 dollars.
Traps
- Treating price as opportunity cost.
- Counting sunk costs in a decision.
- Confusing a shift of a curve with a movement along it.
Key points
- Opportunity cost is the next-best forgone option.
- Ignore sunk costs in forward-looking decisions.
- Shift versus movement along a curve has different causes.
- Trade can benefit both parties through comparative advantage.
- Identify incentives before predicting behavior.